What happens? John Cale (Channing Tatum, in an incredible third WTF moment this year) is a US Capitol police officer assigned to guard the Speaker Of The House. But on arriving to collect his boss one morning, he takes time out to berate a squirrel that has taken to raiding the politician’s bird house, pleading with the rodent to leave so that Cale won’t have to shoot him. Um.

WTF? It’s just an attempt to inject some humour into the film before all the action kicks off – and in fairness, Tatum kind of sells it. His likeably meatheaded and slightly self-deprecating air means that he can get away with the sort of ridiculousness that would die a million deaths if any of the other action leads out there tried it (except, perhaps, his G.I. Joe: Retaliation co-star The Rock). Still, we are watching a grown man attempt to intimidate a squirrel by showing it his gun, so it’s a weird moment even by the standards of Roland Emmerich films.

The lesson: Always try to negotiate first, then blow that big-tailed sucker away.

I seriously think whoever rights these articles for you isn't a comic book fan, or indeed, doesn't watch the movies very closely. The credit sting in Thor TDW.... Firstly, the canister does not contain the Aether. If you know what Gardians of the Galaxy is about and who they are facing, the whole Collector thing makes perfect sense. I don't want to give away any spoilers to people who don't know the comics, but all this is tied together very easily by a single plot point.
I'd think that the bigger WTF moment from the movie would be from the previous 'Odin' scene towards the end. That's made far more people wonder WTF and where are they going with it then the credit sting.
Okay... The whole W.H.O Doctor thing with Capadli isn't wtf in the slightest. Its just a massive coincidence. You have to remember he would have been cast in the role at least a year before the film was finished, so it was a long time before we even knew Matt Smith would be leaving at they'd have to find a More